Gas-burner structure



y 1930- 1 J. H. GRAYSON 1,771,623

GAS BURNER STRUCTURE Filed Fe b. 16, 1929 INVENTIOR.

ATTORNEYfi 3 Patented July 29, 1930 7 T E O I JOHN IL elm-r sen; ornynwoon, oarirromrm, assrenon ro nay Ann NIGHT WATER HEATER. COMPANY,LTD., OF MONROVIA, OALIFORETIA, A CQBPORATION OF CALI- roruwmvGAS-BURNER srrwcrnnn Application filed February is, 1929; Serial .no.340,459. i V i This invention relates to a gas burner having an orificefor the controlof gas so located and shield'ed as to prevent tamperingthere with. The present invention relates to a v25 Bunsen type of burnersuch as may be used for heating various devices among which may bementioned water heaters. Coinmonly, such devices have abu-rner tube withair inlets for primary air, an orifice for paso sage of the gaseous fueland a burner tip or head. The orifice is commonl ClGSl HBCl andinitially constructed for the correct amount of gas for an efficientair-gas ratio. If the orifice is increased in cross sectional area, thevolume of gas passing per unit of time therethrough is increased so thatincomplete combustion may occur with consequent dangers of asphyxiation.Such orifices, if accessible to boring tools from the outside, are oftenincreased in size by the users due to their misunderstanding ofcombustion and design.

The objects of this invention are to provide a burner having any or allof the following features: An integral base and burner tube with anorifice plug in position with the burner so as to be inaccessible totools from without; means provided to insert the orifice plug duringmanufacture and to permanently seal the place of insertion making theentire burner substantially integral; and certain features contributingto strength, simplicity and economy of structure.

These objects together with other objects and correspondingaccomplishments are obtained by means of the embodiment of my inventionillustrated in the accompanying drawing, in which Fig. 1 is an elevationof a twin burner embodying my invention; Fig. 2 is a plan View {3 asseen on the line 22 of Fig. 1; and Fig. 3

is a section through one of the burner tubes.

Referring more particularly to the drawing, 5 indicates a manifoldserving as a base for burner tubes 6" and 6 formed integral therewith.An inlet 7 for gas is provided in the manifold. The burner tubes andbase may be made of cast iron. At the juncture of the passage in thebase 5 and the bore of the burner tubes are openings or bores 8 toreceive orifice plugs. Each burner tube has air ports 9 for theadmission of'p'riinaryr air and lateral slits forming flame or jetopenngs. The upper ends of the'burner tubes are initially constructedwith openings in alinement with the orifice openings 8' and finally aresealed with closure plugs 11 which ai c preferablyforced into'theiopenings so as to provide a pressed fit. The orifice plugs 12 arepreferably made of brass or like material and. are hollow havingbores13-errding with orifices 14 which areniade of proper size" toprovide themost efficient air-gas ratio. I The burner tubes and basearepreferably integral, the openings 8 being machined and the orifice plugsinsertedin position through the openings: in the heads of the burnertubes. After the insertion of the orifice plugs, the tubes are sealed bypressinginto position the closure plugs 11'. Thus, the plugs areundetacli'able and accessc'ann ot be hadto theorifices 14 from the endsof the tubes. The air ports 9' aresuch that theorifices can only bereached latian angle. It is obvious, that the closure plugs may be fixedin position by. any other suitable mechanical eiipedien-ts making themundetachablel Q l What I claim is: i j r i 1, Abur'ner comprising a basehavin an inlet passage, a burner tube outstanding rom said base andintegral therewith, an orifice at the juncture of the bore of said tubeand the passage in said base, an undetachable head closing the outer endofthe' bore of said tube, said head having an opening in alinement withthe bore of said tubeto enable access to said orifice duringmanufactureand a closure {lug permanently fixed in position and seal;

in said opening', j

" 2. A burner comprising base an inlet passage, a burner tubeoutstanding from said base and. integral therewith, an aperture at thejunctureofthe bore of-saiditu e and-the inlet passage of said base, saidtube having an} undetachable headyelosing. the g; outer end" of itsbore, an'cLan orifice plug.

ermanently fixed in said opening and sealmg said head.

3. A burner comprising a base having an inlet passage, a burner tubeoutstanding from said base and integral therewith, an orifice at theunctu-re of the bore of said tube and said base, said tube having anundetachable head closing the outer end of its bore, said inlet passage,a straight burner tube out-' .65

head having a pressed fit closure plug in alinement with the bore ofsaid tube to enable access to said orifice during manufacture.

4. A burner comprising a base having an inlet passage, a burner tubeoutstanding from said base and integral therewith, an aperture at thejuncture of the bore of said tube and the inlet passage of said base,said tube having anundetachable head closing the outer end of its boreand an orifice plug fixed in said aperture, said head having a pressedfit closure plug in alinement with the bore of said tube to enable saidorifice plug to be positioned in said aperture during manufacture. e

5. A burner comprising a base having an inlet passage, a straight burnertube outstanding therefrom and integral therewith having a burner headprovided with lateral flame slits, an aperture at the juncture of thebore of said tube and the inlet passage in said base, said tube havingan undetachable head closing the upper end of its bore, said head havinga pressed fit closure plug in alinement with the bore of said tube toenable 4 access to said aperture during manufacture,

and an orifice plug in said aperture.

6. A burner comprising a base having an inlet passage, a straight burnertube outstanding therefrom and integral therewith having a burner headwith its upper end wall closing the bore of said tubeand lateral flameslits, an orifice at the junctureof the bore of said tube and thepassage in said base, said head having an opening in its end inalinement with the bore of said tube to enable access to said orificeduring manufacture and a closure permanently fixed in position in saidopening.

7. A burner comprising a base having an inlet passage, a straight burnertube outstanding therefrom and integral therewith having a burner headwith lateral flame slits. 7

an aperture at the juncture of the bore of said tube and theinletpassage in said base, said tube having an undetachable head closingthe outer end of its bore, an orifice plug fixedin said aperture, saidhead having an opening in alinement with the bore of said tube to,enable said orifice plug to be positioned in said-apertur,'and a closureplug permanently fixed in said opening and seal- 1ng the latter.

8. A burner comprising a-b ase having an standing therefrom andintegraltherewith havin a burner head provided with an end wall closing the boreof said tube and lateral flame slits, an orifice at the juncture of thebore of said tube and the passage through said base, .said head havin apressed fit closure plug in alinement with the bore of said tubetoenable access to said orifice during manufacture.

9. A burner comprising a base having an inlet passage, a straight burnertube outstanding therefrom and integral therewith having a burner headwith lateral flame slits, an aperture at the juncture of the bore ofsaid tube and the inlet passage in said base, said tube having anundetachable head closing the outer end of its bore,an orifice plugfixed in said aperture, said head having a pressed fit closure plug inalinement with the bore of said tube to enable said orifice plug to bepositioned in said aperture.

In witness thatv I claim the foregoing I have hereunto subscribed myname this 25th day of January, 1929.

JOHN H. GRAYSON.

